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| <head> |
| <title>Board</title> |
| </head> |
| <body> |
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| <h1>x86 Board Development</h1> |
| <p> |
| Board development requires System-on-a-Chip (SoC) support. |
| The combined steps are listed |
| <a target="_blank" href="../x86Development.html">here</a>. |
| The development steps for the board are listed below: |
| </p> |
| <ol> |
| <li><a href="#RequiredFiles">Required Files</a></li> |
| </ol> |
| |
| |
| <hr> |
| <h1><a name="RequiredFiles">Required Files</a></h1> |
| <p> |
| Create the board directory as src/mainboard/<Vendor>/<Board>. |
| </p> |
| |
| <p> |
| The following files are required to build a new board: |
| </p> |
| <ol> |
| <li>Kconfig.name - Defines the Kconfig value for the board</li> |
| <li>Kconfig |
| <ol type="A"> |
| <li>Selects the SoC for the board and specifies the SPI flash size |
| <ol type="I"> |
| <li>BOARD_ROMSIZE_KB_<Size></li> |
| <li>SOC_<Vendor>_<Chip Family></li> |
| </ol> |
| </li> |
| <li>Declare the Kconfig values for: |
| <ol type="I"> |
| <li>MAINBOARD_DIR</li> |
| <li>MAINBOARD_PART_NUMBER</li> |
| <li>MAINBOARD_VENDOR</li> |
| </ol> |
| </li> |
| </ol> |
| </li> |
| <li>devicetree.cb - Enable root bridge and serial port |
| <ol type="A"> |
| <li>The first line must be "chip soc/Intel/<soc family>"; |
| this path is used by the generated static.c to include the chip.h |
| header file |
| </li> |
| </ol> |
| </li> |
| <li>romstage.c |
| <ol type="A"> |
| <li>Add routine mainboard_romstage_entry which calls romstage_common</li> |
| </ol> |
| </li> |
| <li>Configure coreboot build: |
| <ol type="A"> |
| <li>Set LOCALVERSION</li> |
| <li>FLASHMAP_OFFSET = 0x00700000</li> |
| <li>Select vendor for the board</li> |
| <li>Select the board</li> |
| <li>CBFS_SIZE = 0x00100000</li> |
| <li>Set the CPU_MICROCODE_CBFS_LEN</li> |
| <li>Set the CPU_MICROCODE_CBFS_LOC</li> |
| <li>Set the FSP_IMAGE_ID_STRING</li> |
| <li>Set the FSP_LOC</li> |
| <li>Disable GOP_SUPPORT</li> |
| <li>No payload</li> |
| <li>Choose the default value for all other options</li> |
| </ol> |
| </li> |
| </ol> |
| |
| |
| <hr> |
| <p>Modified: 31 January 2016</p> |
| </body> |
| </html> |